The euro, which was trading around 1.3340 against the U.S. dollar
when Juncker's comments crossed, is plummeted to a low of 1.3263
before bouncing back slightly (click to enlarge):

Thinkorswim

Juncker's comments highlight
one of the fundamental problems the eurozone faces right now. Too
high of a euro makes exports to areas outside the currency bloc
less competitive vis-a-vis world competitors.